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3 years ago

What does 2+3×6+[(9×5)÷3]equals

Mathematics

1 answer:

VashaNatasha [74]3 years ago

6 0

Answer: 51

Step-by-step explanation:

First simplify what’s in the bracket.that Is 9 x 5=45/3 which is equal to 15. Simplify the other side 2 +3 x 6 =36

Finally, Add up 36 and 15

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Prove that √2 +√5 is irrational

Sindrei [870]

We have to prove that $\sqrt{2}+\sqrt{5}$ is irrational. We can prove this statement by contradiction.

Let us assume that $\sqrt{2}+\sqrt{5}$ is a rational number. Therefore, we can express:

$a=\sqrt{2}+\sqrt{5}$

Let us represent this equation as:

$a-\sqrt{2}=\sqrt{5}$

Upon squaring both the sides:

$(a-\sqrt{2})^{2}=(\sqrt{5})^{2}\\a^{2}+2-2\sqrt{2}a=5\\a^{2}-2\sqrt{2}a=3\\\sqrt{2}=\frac{a^{2}-3}{2a}$

Since a has been assumed to be rational, therefore, $\frac{a^{2}-3}{2a}$ must as well be rational.

But we know that $\sqrt{2}$ is irrational, therefore, from equation $\sqrt{2}=\frac{a^{2}-3}{2a}$ the expression $\frac{a^{2}-3}{2a}$ must be irrational, which contradicts with our claim.

Therefore, by contradiction, $\sqrt{2}+\sqrt{5}$ is irrational.

4 0

3 years ago

Federal, State, and local income taxes, FICA/Social Security taxes - 6.4% and Medicare taxes - 1.52% are mandatory deductions ta

natulia [17]

It would be I think it would be social science

8 0

3 years ago

What is the slope of the graph? (Example: 2/3,-4,-2/9)

vesna_86 [32]

Answer:

2/5

Step-by-step explanation:

Slope can be found with rise over run. So looking at the graph, the line rises 2 units and runs 5 units to the right. Therefore, the slope should be 2/5.

7 0

3 years ago

Martin and Isabelle go bowling. Each game costs $10, and they split that cost. Martin has his own bowling shoes, but Isabelle pa

wariber [46]

Answer:

Martin's Bowling cost = $5x

Isabelle Bowling cost = $5x + 3

where x is the total games Martin and Isabelle played.

Step-by-step explanation:

As given,

There are 2 people - Martin and Isabelle

Each game costs = $10

Let they both play total games = x

⇒total game cost = $10x

As they split the cost , it means the cost is divided into half

⇒Martin game cost = $5x

Isabelle game cost = $5x

Also, given that Isabelle pays $3 to rent shoes.

⇒$3 is added to the Isabelle game cost

∴ we get

Isabelle game cost = $5x + 3

so, we get

Martin's Bowling cost = $5x

Isabelle Bowling cost = $5x + 3

5 0

3 years ago

Sanjay has 10 blue envelopes. He has 6 fewer yellow envelopes than blue envelopes. He has 5 times as many green envelopes as yel

noname [10]

Answer:

34 i believe

Step-by-step explanation:

6 0

4 years ago